Tourists wait to visit the Potala Palace in Lhasa, capital of southwest China's Tibet Autonomous Region, July 24, 2011. A large number of tourists poured into Tibet during the summer season, as the region is celebrating the 60th anniversary of its peaceful liberation. The region received 2.25 million tourists in the first half of this year, 24.8 percent more than the same period of last year.[Photo/Xinhua]